Rob Reiner's son - who has been arrested on suspicion of murdering the filmmaker and his wife - was reportedly disruptive at a party hosted by comedian Conan O'Brien the night before the killings. Nick Reiner joined his father and mother, Michele Singer Reiner, at the event on Saturday - and the couple were upset and embarrassed about his behaviour, Sky News's US partner NBC News cited a source as saying. #skynews SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews